1498690491 has 16 divisors (see below), whose sum is σ = 2022537600. Its totient is φ = 987005888.

The previous prime is 1498690469. The next prime is 1498690499. The reversal of 1498690491 is 1940968941.

It is a cyclic number.

It is not a de Polignac number, because 1498690491 - 2²² = 1494496187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1498690499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 430540 + ... + 434006.

It is an arithmetic number, because the mean of its divisors is an integer number (126408600).

Almost surely, 2^1498690491 is an apocalyptic number.

1498690491 is a deficient number, since it is larger than the sum of its proper divisors (523847109).

1498690491 is a wasteful number, since it uses less digits than its factorization.

1498690491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5178.

The product of its (nonzero) digits is 559872, while the sum is 51.

The square root of 1498690491 is about 38712.9240822752. The cubic root of 1498690491 is about 1144.3810314354.

The spelling of 1498690491 in words is "one billion, four hundred ninety-eight million, six hundred ninety thousand, four hundred ninety-one".